The observed redshifts of galaxies are evidence for the big bang theory of the origin of the universe, because they indicate that
a) the galaxies are still very hot.
b) the galaxies cannot be seen from the other side.
c) the galaxies are moving rapidly away in all directions.
d) the galaxies turned red at the original moment of explosion.

C

Explanation:

things are moving in space, proving that since the big bang, planets and galaxies have formed and are expanding and others are forming. A red light trace shows when something is moving away, versus a blue light trace when it is coming closer. Things are ever moving in the universe.

this would be a math

i believe it would be c: tons.